Window lock



11 II. F

W M a W Patented Man 22, 1932 e noLANnjFAnnEY, onivnw YORK, N. Y;

PAT NT OFF-ICE wmnow ocx 7 Application filed June 30,

' This invention relates 'm'ore especially to window locks for positively securing window sashes in any positions't'o which they may be adjusted or for interlocking two window 6 sashes in any relative positions to whichthey maybe adjusted. v

The primary object of my invention is-to provide an improved construction, combinationand arrangement of parts in a device of this character whereby the window sashes may be adjusted one at a time to any desired position and interlocked in their relative adjusted positions by means of a latch or lock which may be simply and economically constructed and adapted to be applied as an attachment to windows of well-known construction.

One of the objects of my invention is to provide a window lock attachment of improved form and construction which can be readily applied to windows already in use without any considerable alteration or labor being required for placing thedevice in serv- More particular objects of invention Will be understood from the specification, particular features of construction being recited in the claims in connection with the attached drawings which show an adaptation of my shown in elevation;

Figure 5 is a fragmentary vertical section on the line 55 of Figure 2, parts being broken away and parts shown in elevation; and

Figure 6 is a fragmentary section on the line 66 of Figure 2.

invention to a two-sash window construction,

ing to the line 44: of Figure 3, parts being Y 1930. s r al No. 465,033.

4 According to the embodiment of my invention shown inthe drawings, 'a window frame 1 of usual constructioniis provided with a sideboard Q. Mounted within the window frame 1 are upper and lower: window sashes 3 and 4, said window sashes: having their side edges in slidable engagement with the side board 2 of the window frame. An outer guide strip 5 and an inner molding strip 61serve toguide the sashes 3 and 4 in their upward and' downward movements According to the drawings, my invention :is I shown as an 'at'tachme'nt for the windows in of the heusing 7 flash with the guiding suriac eef sideboard 2. A locking bar '9'which isfpreferablyarran ed within the upper forward cornerof the ous'ing 7 as indicated in Figure 3, is normally retained in position against the front 'wall- -of the housing by means of a leaf-springllf) which may be riveteda't "11- to the inner wall of said housing. v As shown in Figure 2, the locking bar .Qcarries twoilockin'g pins orbolts 12 and 13 whichyare of-unequal length and project throughsuitable .openin-gs in the front wall of the-housing; These locking pins or bolts may be adapted to interlock with the -tslidabl-eedges of'thesashes 3 and 4.by-pro- V-id-ing a series of sockets 14 and-15 in the edges of said window-sashes for the reception of said locking pins, A push rod 15 which is preferably made rectangular in cross-section and integrally oined to the lock-bar 9, is reciprocably mounted in the front and back plates of housing 7. Said pushrod may be provided with a finger gripr16 at its outer end which is preferably arranged to project H in front of the'upper rail of the lower sash' i. 95 Mounted within the molding strip 6 is a socket 17 for the push-rod 15, said socketbeing provided with an escutcheon plate 18 which may be secured to themolding strip "6 by rivets 19. As shown'bestin Figure 5, 3Q0.

the push-rod 15 is provided near its outer end with a series of axially-spaced notches 20. Movable about a pin 21 below the pushrod 15 is a latch plate 22 which is adapted to engage in one or another of the notches 20 for the purpose of retaining said puslrrod in different adjusted positions. Said latch is held in looking position by means of the pressure exerted by leaf-spring 10 upon the lock-bar 9 and transmitted by said lock-bar by means of push-rod 15. Suitable means for reenforcing the latch plate 22 under this pressure, may be provided by a flanged support or post 23 which is adapted to engage the outer edge of said latch plate in locking position. By an inspection of Figure 2, it will be understood that when the window lock occupies a position in which the looking pins 12 and 13 project into the sockets 14 and 15, thelatch plate 22 may be introduced into the innermost notch 20 to provide a safety catch for preventing a surreptitious entry. By moving the push-rod 15 inwardly and permitting the latch plate 22 to occupy the intermediate notch 20, the locking pin 12 locking bar and presented from said guide rail of the window frame.

2. In a device of the character described,

the combination with a window frame proable endwise in front of said window sashes, a

primary pressure means operating continuouslyon said locking bar for resisting its dis placement in a direction away from said edges of the window sashes, and a secondary pressure means arranged to operate upon said locking bar after the shorter locking pin has been retracted from its, particular window sash.

ROLAND FARLEY.

is latched in retracted position and the lower sash 4; is thus left free to be raised or lowered at will. WVhenever the latch plate 22 is in engagement with the outermost notch 20,

both locking pins 12 and 13 will be latched .in release position so that both upper and lower sashes may be moved at will. As shown in Figures 2 and 3, an auxiliary leaf- "spring 23 maybe riveted at 24 to the back wall of the housing 7 and thus arranged to apply additional pressure to the lock-bar 9 upon the completion of its initial movement underthe resistance of leaf-spring 10 during the retraction of locking pin 12 from its socket 14. Therelease of the lower sash may be accomplished under a lighter pressure than that applied to the push rod 15 for re leasing the upper sash 3. This difi'erence'in pressures applied to the push -rod 15' provides simple and effective means for preventing the accidental release of the upper sash when the intention is to release only the lower sash. For convenience in adiusting the position' of the upper sash 3, the lower sash 4 may be dropped to its lowermost position and permitted to rest there until the upper sash is properly positioned after which a movement of the lock-bar or push-rod to middle position permits the desired adjustment of the lower sash.

1. In a window lock, the combination of a bar adapted to be arranged within a side rail of a window frame and transversely with respect to the slidable edges of two adjacent window sashes, said locking bar being provided withlocking pins of difl'erent lengths adapted to interlock respectively with said 

